Description: A cancellation law for division. (Contributed by NM, 9-Feb-1995)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | divclz.1 | ⊢ 𝐴 ∈ ℂ | |
| divclz.2 | ⊢ 𝐵 ∈ ℂ | ||
| divcl.3 | ⊢ 𝐵 ≠ 0 | ||
| Assertion | divcan2i | ⊢ ( 𝐵 · ( 𝐴 / 𝐵 ) ) = 𝐴 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | divclz.1 | ⊢ 𝐴 ∈ ℂ | |
| 2 | divclz.2 | ⊢ 𝐵 ∈ ℂ | |
| 3 | divcl.3 | ⊢ 𝐵 ≠ 0 | |
| 4 | 1 2 | divcan2zi | ⊢ ( 𝐵 ≠ 0 → ( 𝐵 · ( 𝐴 / 𝐵 ) ) = 𝐴 ) |
| 5 | 3 4 | ax-mp | ⊢ ( 𝐵 · ( 𝐴 / 𝐵 ) ) = 𝐴 |